| AC | Analog Comparators |
| ADC | Analog-To-Digital Converter |
| AFC | Automatic Frequency Control |
| AHB | AMBA Advanced High-Performance Bus |
| AIN | Analog Inputs |
| AMBA | Advanced Microcontroller Bus Architecture |
| APB | AMBA Advanced Peripheral Bus |
| BOR | Brown-out Reset |
| BUPDIV | Backup Clock Division |
| BW | Bandwidth |
| CCL | Custom Control Logic |
| CPUDIV | CPU Clock Division |
| CRC | Cyclic Redundancy Check |
| CTS | Clear To Send |
| EC | Error Correction Code |
| EIC | External Interrupt Controller |
| EMI | Electro Magnetic Interference |
| FSK | Frequency Shift Keying |
| GCLK | Generic Clock Generator |
| GPIO | General Purpose I/O pin |
| HVIN | Hardware Version Identification Number |
| IPA | Isopropyl alcohol |
| IrDA | Infrared Data Association |
| IRQ | Interrupt Request |
| ISM | Industrial, Scientific and Medical |
| LIN | Local Interconnect Network |
| LNA | Low Noise Amplifier |
| LoRa | Long Range |
| LoRaWAN® | Long Range Wide Area Network |
| LPDIV | Low Power Clock Division |
| MTB | Micro Trace Buffer |
| NMI | Non-Maskable Interrupt |
| OEM | Original Equipment Manufacturer |
| PA | Power Amplifier |
| PER | Packet Error Rate |
| PMN | Product Marketing Name |
| POR | Power-on Reset |
| PTC | Peripheral Touch Controller |
| RF | Radio frequency |
| RFI_HF | RF Input High Frequency |
| RFO_HF | RF Output High Frequency |
| RSSI | Received signal strength indication |
| RSTC | Reset Controller |
| RTC | Real Time Counter |
| RTS | Request To Send |
| RX | Receive/Receiver |
| SERCOM | Serial Communication |
| SF | Spreading Factor |
| SiP | System-in-package |
| SMBus | System Management Bus |
| SP3T | Single Pole Three Throw |
| SRAM | Static Random Access Memory |
| SUPC | Supply Controller |
| SWD | Serial Wire Debug |
| TCXO | Temperature Compensated Crystal Oscillator |
| TRX | Transceiver |
| TX | Transmit/Transmitter |
| UART | Universal Asynchronous Receiver Transmitter |
| UHF | Ultra-High Frequency |
| USART | Universal Synchronous and Asynchronous Receiver and
Transmitter |
| USB | Universal Serial Bus |
| WDT | Watch-dog Timer |
| WiSUN | Wireless Smart Utility Network |
| WMBus | Wireless Meter Bus |
| WO | Waveform Outputs |